Stability of refractory castables in steam--N/sub 2/ and steam--CO atmospheres at 199/sup 0/C
Conference
·
· Am. Ceram. Soc. Bull.; (United States)
OSTI ID:7094931
- Univ. of Missouri, Rolla
The properties of a high, intermediate and low Al/sub 2/O/sub 3/ refractory castable were investigated after exposure to steam--N/sub 2/ and steam--CO atmospheres at 465 psia and 199/sup 0/C for 6, 12 and 18 days. Chemical reactions consisted of (1) the hydration of residual unreacted calcium aluminate cement to form additional cementitious phases, (2) the leaching of CaO from the castable and its reaction to form CaCO/sub 3/ and calcium formate, (3) the hydration of alumina to form boehmite and (4) the dissolution of SiO/sub 2/ by steam. The properties of the intermediate Al/sub 2/O/sub 3/ castable were least affected by the exposure conditions.
- OSTI ID:
- 7094931
- Conference Information:
- Journal Name: Am. Ceram. Soc. Bull.; (United States) Journal Volume: 56:7
- Country of Publication:
- United States
- Language:
- English
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